Fees for cable and streaming subscription services can add up. But many public libraries are branching out, partnering with streaming and other digital media services to offer library-card holders free access to tons of movies, TV shows, music and e-books. For example, Kanopy.com partners with more than 4,000 libraries and features more than 30,000 films. Its selection focuses on indie flicks and educational titles rather than blockbuster productions, but unlike most other free streaming services, Kanopy doesn’t show ads. And Hoopla (www.hoopladigital.com) offers patrons of more than 1,500 libraries free access, without ads, to movies, music, audiobooks, e-books and television shows.